Chương 3: PHƯƠNG TRÌNH, HỆ PHƯƠNG TRÌNH
Các câu hỏi tương tự
giúp mik giải bài hệ pt vs ạ!
1,left{{}begin{matrix}x^2+y^2+dfrac{2xy}{x+y}1sqrt{x+y}x^2-yend{matrix}right.
2,left{{}begin{matrix}2x^3+xy^2+xy^3+4x^2y+2ysqrt{4x^2+x+6}-5sqrt{1+2y}1-4yend{matrix}right.
3,left{{}begin{matrix}2x^2+sqrt{2}xleft(x+yright)y+sqrt{x+y}sqrt{x-1}+xysqrt{y^2+21}end{matrix}right.
4,left{{}begin{matrix}sqrt{9y^2+left(2y+3right)left(y-xright)}+4sqrt{xy}7xleft(2y-1right)sqrt{1+x}+left(2y+1right)sqrt{1-x}2yend{matrix}right.
Đọc tiếp
giúp mik giải bài hệ pt vs ạ!
1,\(\left\{{}\begin{matrix}x^2+y^2+\dfrac{2xy}{x+y}=1\\\sqrt{x+y}=x^2-y\end{matrix}\right.\)
2,\(\left\{{}\begin{matrix}2x^3+xy^2+x=y^3+4x^2y+2y\\\sqrt{4x^2+x+6}-5\sqrt{1+2y}=1-4y\end{matrix}\right.\)
3,\(\left\{{}\begin{matrix}2x^2+\sqrt{2}x=\left(x+y\right)y+\sqrt{x+y}\\\sqrt{x-1}+xy=\sqrt{y^2+21}\end{matrix}\right.\)
4,\(\left\{{}\begin{matrix}\sqrt{9y^2+\left(2y+3\right)\left(y-x\right)}+4\sqrt{xy}=7x\\\left(2y-1\right)\sqrt{1+x}+\left(2y+1\right)\sqrt{1-x}=2y\end{matrix}\right.\)
giải hệ phương trình:
1, \(\left\{{}\begin{matrix}\left(x+y-3\right)^3=4y^3\left(x^2y^2+xy+\frac{45}{4}\right)\\x+4y-3=2xy^2\end{matrix}\right.\)
2, \(\left\{{}\begin{matrix}x^3+7y=\left(x+y\right)^2+x^2y+7x+4\\3x^2+y^2+8y+4=8x\end{matrix}\right.\)
3, \(\left\{{}\begin{matrix}2x+5y=xy+2\\x^2+4y+21=y^2+10x\end{matrix}\right.\)
Giải hệa) left{{}begin{matrix}2x^2-5xy-y^21yleft(sqrt{xy-2y^2}+sqrt{4y^2-xy}right)1end{matrix}right.b) left{{}begin{matrix}x^3+12left(x^2-x+yright)y^3+12left(y^2-y+xright)end{matrix}right.c) left{{}begin{matrix}x^2-2y^212y^2-3z^21xy+yz+zx1end{matrix}right.left(x,y,zin Rright)}
Đọc tiếp
Giải hệ
a) \(\left\{{}\begin{matrix}2x^2-5xy-y^2=1\\y\left(\sqrt{xy-2y^2}+\sqrt{4y^2-xy}\right)=1\end{matrix}\right.\)
b) \(\left\{{}\begin{matrix}x^3+1=2\left(x^2-x+y\right)\\y^3+1=2\left(y^2-y+x\right)\end{matrix}\right.\)
c) \(\left\{{}\begin{matrix}x^2-2y^2=1\\2y^2-3z^2=1\\xy+yz+zx=1\end{matrix}\right.\left(x,y,z\in R\right)}\)
Giải hệ pt
\(\left\{{}\begin{matrix}x^3+4y=y^3+16x\\1+y^2=5\left(1+x^2\right)\end{matrix}\right.\)
Giúp mình với, thanks các bạn nhiều: ^^ BT/ Giải hệ pt:
1/left{{}begin{matrix}x^3+y^31x^2y+2xy^2+y^32end{matrix}right. 2/left{{}begin{matrix}y^2left(x+8right).left(x^2+2right)y^2-4left(x+2right)y+16+16x-5x^20end{matrix}right.
3/left{{}begin{matrix}x^2-3xleft(y-1right)+y^2+yleft(x-3right)4x-xy-2y1end{matrix}right. 3/left{{}begin{matrix}sqrt{x}-sqrt{x-y-1}1y^2+x+2ysqrt{x}-xy^20end{matrix}right.
Đọc tiếp
Giúp mình với, thanks các bạn nhiều: ^^ BT/ Giải hệ pt:
1/\(\left\{{}\begin{matrix}x^3+y^3=1\\x^2y+2xy^2+y^3=2\end{matrix}\right.\) 2/\(\left\{{}\begin{matrix}y^2=\left(x+8\right).\left(x^2+2\right)\\y^2-4\left(x+2\right)y+16+16x-5x^2=0\end{matrix}\right.\)
3/\(\left\{{}\begin{matrix}x^2-3x\left(y-1\right)+y^2+y\left(x-3\right)=4\\x-xy-2y=1\end{matrix}\right.\) 3/\(\left\{{}\begin{matrix}\sqrt{x}-\sqrt{x-y-1}=1\\y^2+x+2y\sqrt{x}-xy^2=0\end{matrix}\right.\)
1/ Giải hpt = p đặt ẩn phụ : a,\(\left\{{}\begin{matrix}\left(x+y\right)^3+y=5\\3\left(x+y\right)^3-22xy+21=11x^2+12y^3\end{matrix}\right.\)
b,\(\left\{{}\begin{matrix}81x^3y^2-81x^2y^2+33xy^2-29y^2=4\\25y^3+9x^2y^3-6xy^3-4y^2=24\end{matrix}\right.\)
giải giúp mik bt này vs mn!
1)left{{}begin{matrix}2x^2+y^2+x3left(xy+1right)+2ydfrac{2}{3+sqrt{2x-y}}+dfrac{2}{3+sqrt{4-5x}}dfrac{9}{2x-y+9}end{matrix}right.
2)left{{}begin{matrix}left(x+3y+1right)sqrt{2xy+2y}yleft(3x+4y+3right)left(sqrt{x+3}-sqrt{2y-2}right)left(x-3+sqrt{x^2+x+2y-4}right)4end{matrix}right.
3)left{{}begin{matrix}x-dfrac{1}{x}y-dfrac{1}{y}2yx^3+1end{matrix}right.
4)left{{}begin{matrix}sqrt{2x-3}left(y^2+2011right)left(5-yright)+sqrt{y}yleft(y-x+2right)3x+3end{matrix}right.
5...
Đọc tiếp
giải giúp mik bt này vs mn!
1)\(\left\{{}\begin{matrix}2x^2+y^2+x=3\left(xy+1\right)+2y\\\dfrac{2}{3+\sqrt{2x-y}}+\dfrac{2}{3+\sqrt{4-5x}}=\dfrac{9}{2x-y+9}\end{matrix}\right.\)
2)\(\left\{{}\begin{matrix}\left(x+3y+1\right)\sqrt{2xy+2y}=y\left(3x+4y+3\right)\\\left(\sqrt{x+3}-\sqrt{2y-2}\right)\left(x-3+\sqrt{x^2+x+2y-4}\right)=4\end{matrix}\right.\)
3)\(\left\{{}\begin{matrix}x-\dfrac{1}{x}=y-\dfrac{1}{y}\\2y=x^3+1\end{matrix}\right.\)
4)\(\left\{{}\begin{matrix}\sqrt{2x-3}=\left(y^2+2011\right)\left(5-y\right)+\sqrt{y}\\y\left(y-x+2\right)=3x+3\end{matrix}\right.\)
5)\(\left\{{}\begin{matrix}x^3+2x^2=x^2y+2xy\\2\sqrt{x^2-2y-1}+\sqrt[3]{y^3-14=x-2}\end{matrix}\right.\)
giải hệ pt : \(\left\{{}\begin{matrix}x^2-x^2y+y^2-y^2x=3\\x-2xy+y=3\end{matrix}\right.\)
giải hệ phương trình
a )\(\left\{{}\begin{matrix}x+2y=3\\x^2+y^2=2\end{matrix}\right.\)
b)\(\left\{{}\begin{matrix}2x-y=1\\3x^2+4y^2=7\end{matrix}\right.\)
c)\(\left\{{}\begin{matrix}x+2y\\x^2+xy=3\end{matrix}\right.\)
>< giúp e với ạ